Brushless motor rotor structure employing built-in magnetic steel tangential magnetization

A brushless motor and rotor structure technology, applied in the magnetic circuit shape/style/structure, magnetic circuit rotating parts and other directions, can solve the problems of magnetic leakage, high cost, low utilization rate of magnetic steel, etc., to improve motor performance, Improve stability and reduce rotor flux leakage

Pending Publication Date: 2016-03-09
NEW ANANDA DRIVE TECHN SHANGHAI
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existing tangential magnetization technology has the following disadvantages: serious magnetic flux leakage, low utilization rate of magnet steel; stainless steel material is required for the shaft material, and the cost is high

Method used

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  • Brushless motor rotor structure employing built-in magnetic steel tangential magnetization
  • Brushless motor rotor structure employing built-in magnetic steel tangential magnetization
  • Brushless motor rotor structure employing built-in magnetic steel tangential magnetization

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0020] Such as Figure 1 to Figure 6 As shown, the rotor structure of the brushless motor adopting built-in magnetic steel tangentially magnetized in the present invention includes a rotating shaft 3, a rotor iron core 1 and a magnetic steel 2, the magnetic steel 2 is embedded in the rotor iron core 1, and the rotor iron core 1 is fixed on the rotating shaft 3, the rotor core is composed of the first rotor punch 11 and the second rotor punch 12 alternately laminated by the self-clamping riveting m...

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Abstract

The invention provides a brushless motor rotor structure employing built-in magnetic steel tangential magnetization, and the structure comprises a rotating shaft, a rotor core, and magnetic steels. The magnetic steels are inset in the rotor core, and the rotor core is fixed on the rotating shaft. The rotor core is formed by the alternate superposing of first rotor punching sheets and second rotor punching sheets through a self-buckling riveting mechanism, wherein the first and second punching sheets are provided with magnetic steel grooves. The magnetic steel is inserted into the magnetic steel grooves in a tangential manner. The structure can effectively reduce magnetic leakage of a motor.

Description

technical field [0001] The invention relates to a rotor structure of a brushless motor, in particular to a rotor structure of a brushless motor adopting built-in magnetic steel for tangential magnetization. Background technique [0002] The traditional brushless motor rotor structure adopts surface-mounted magnetic steel or built-in radial magnetization structure. In practical applications, under the limited motor volume, it is necessary to increase the rated output power of the motor. The radial magnetization structure is limited by the volume. Restriction does not provide enough flux. The tangential magnetization can realize the parallel connection of two magnetic steels to provide magnetic flux, which obviously improves the air gap magnetic flux and increases the rated output power of the motor. The existing tangential magnetization technology has the following disadvantages: serious magnetic flux leakage, low utilization rate of magnetic steel; stainless steel is requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K1/28
Inventor 黄洪岳舒伟方徐建卓达夏业中
Owner NEW ANANDA DRIVE TECHN SHANGHAI
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